js remove first n characters from string code example

Example 1: delete first character javascript

let str = 'Hello';
 
str = str.slice(1);
console.log(str);
 
/*
    Output: ello
*/

Example 2: remove first 3 characters from string javascript

var string = "abcd";
console.log(string.substring(3)); //"d"

Example 3: remove first char javascript

let str = 'Hello';
 
str = str.substring(1);
console.log(str);
 
/*
    Output: ello
*/

Example 4: javascript get last n characters of string

'abc'.slice(-1); // c

Example 5: javascript remove first character from string

let str = 'ss';

str = new RegExp('^.(.*)').exec(str)[1]; // "s"

Example 6: javascript remove first character from string

let str = 's';

str = (function f(s) { // don't use on large strings
  		return s.length<=1?'':f(s.slice(0, -1))+s[s.length-1]
	})(str); // ""